"In the '80s I was on movie sets. I was so focused on films and studying movies and learning about how films are made. I wasn't really part of that world. I missed that," Cruise, 49, said at the Rock of Ages premiere in London June 10. "I was living in a different part of the '80s. To go back and look at it, it was wild."

Actor Tom Cruise attends the European Premiere of 'Rock Of Ages' at Odeon Leicester Square on June 10, 2012 in London, England.Credit: Dave M. Benett/Getty Images

A family man at heart, Cruise -- who sings "Pour Some Sugar on Me" as Stacee Jaxx in the film -- added that "nothing is more important" than his wife Katie Holmes, 33, and his three children: Suri, 6, Connor, 17, and Isabella, 19. "One thing feeds the other, the work and the family," Cruise said. "I feel very lucky."